The stroke-dashoffset attribute is a presentation attribute defining an offset on the rendering of the associated dash array.

The word-spacing attribute specifies spacing behavior between words.

The values attribute has different meanings, depending upon the context where it's used, either it defines a sequence of values used over the course of an animation, or it's a list of numbers for a color matrix, which is interpreted differently depending on the type of color change to be performed.

The JavaScript exception "cannot use ?? unparenthesized within || and && expressions" occurs when a nullish coalescing operator is used with a logical OR or logical AND in the same expression without parentheses.

The spreadMethod attribute determines how a shape is filled beyond the defined edges of a gradient.

A non-capturing group groups a subpattern, allowing you to apply a quantifier to the entire group or use disjunctions within it. It acts like the grouping operator in JavaScript expressions, and unlike capturing groups, it does not memorize the matched text, allowing for better performance and avoiding confusion when the pattern also contains useful capturing groups.

The JavaScript exception "redeclaration of formal parameter" occurs when the same variable name occurs as a function parameter and is then redeclared using a let assignment in a function body again.

The JavaScript exception "super() is only valid in derived class constructors" occurs when the super() call is used somewhere that's not the body of a constructor in a class with extends keyword.

The JavaScript exception "negated character class with strings in regular expression" occurs when a v-mode character class is negated and may be able to match a string (more than one character).

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